CN116044749A

CN116044749A - Vane pump with leakage prevention function for hydraulic equipment

Info

Publication number: CN116044749A
Application number: CN202211684377.4A
Authority: CN
Inventors: 姚公和; 杨后松; 赵长江; 简梅; 顾仕萍
Original assignee: Jiangsu Hurun Pump Technology Co ltd
Current assignee: Jiangsu Hurun Pump Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-02

Abstract

The invention discloses a vane pump with a leakage-proof function for hydraulic equipment, which belongs to the technical field of vane pump equipment and comprises a support, a base shell component and a vane component, wherein the support is used for fixed installation, the base shell component comprises a shell and an end cover, the shell is provided with a cylindrical cavity, the opening of the cavity is sealed through the end cover and is fixed through bolts penetrating through the end cover, the shell is fixed on the support through bolts, a plurality of through holes penetrate through an end surface pipe of the shell, the fixing bolts are arranged at two ends of the through holes to seal the end parts of the through holes, the vane component comprises a rotating wheel, vanes and a shaft body, the shaft body is arranged in the shell in a coaxial line distribution mode, the rotating wheel is eccentrically arranged on the shaft body, and a plurality of telescopic vanes are arranged on the rotating wheel. According to the invention, the vane pump is fixedly arranged on the hydraulic equipment through the arranged support, so that the transmission connection between the shaft body and the output shaft of the engine is realized conveniently.

Description

Vane pump with leakage prevention function for hydraulic equipment

Technical Field

The invention relates to the field of vane pump equipment, in particular to a vane pump with a leakage prevention function for hydraulic equipment.

Background

Pumps for pumping fluids have mainly three structural forms, namely plunger pumps, gear pumps and vane pumps, which are widely used in many mechanical fields due to their excellent working properties.

The structure of the existing vane pump mainly comprises a stator and a rotor, wherein the rotor is rotatably arranged in the stator, and a cavity is formed between the stator and the rotor. The inner wall of the stator is approximately elliptical, so that a fluid suction area, a fluid compression area and a blade retraction area are formed in the cavity. A plurality of vane grooves are formed in the rotor in the radial direction thereof, and a vane is slidably disposed in each vane groove. After the rotor rotates, the outer parts of the blades can extend into the cavity under the action of centrifugal force.

In the working and stopping process of the vane pump, the internal pressure is changed greatly, after long-time use, the bolt for installing the sealing end cover of the vane pump is loosened in the process of changing the internal pressure, thereby causing the leakage of the vane pump, and reducing the inefficiency of the vane pump.

Disclosure of Invention

In order to solve the technical problems, the invention provides a vane pump with a leakage prevention function for hydraulic equipment, which comprises a support, a base shell component and a vane component, wherein the support is used for being fixedly installed, the base shell component comprises a shell and an end cover, the shell is provided with a cylindrical cavity, an opening of the cavity is sealed through the end cover and is fixed through bolts penetrating through the end cover, the shell is fixed on the support through bolts, an end face pipe of the shell penetrates through a plurality of through holes, the fixing bolts are installed at two ends of the through holes to seal the end parts of the through holes, the vane component comprises a rotating wheel, vanes and a shaft body, the shaft body is coaxially distributed in the shell, the rotating wheel is eccentrically installed on the shaft body, and a plurality of telescopic vanes are installed on the rotating wheel.

Further, the support comprises a base plate and a vertical plate, the vertical plate is vertically arranged on one side of the base plate, a plurality of protruding blocks are arranged on the installation surface of the vertical plate, a positioning hole is formed in the middle of the vertical plate, a plurality of limiting grooves are formed in the base plate, and the base plate is fixed in the limiting grooves through screws.

Further, the casing is cylindrical structure, the deep hole has been seted up on the one end face of casing, and the deep hole of seting up forms the cavity, another terminal surface of casing is equipped with bulge loop and recess, the recess is equipped with a plurality of, a plurality of the recess is around bulge loop annular distribution, simultaneously recess and lug one-to-one, the casing is installed on the riser, and bulge loop and locating hole cooperation installation simultaneously, recess and the cooperation of corresponding lug are installed.

Further, the shell is communicated with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are distributed along the center of the axis of the shell in a symmetrical mode, meanwhile, the axis of the liquid inlet pipe is parallel to the axis of the liquid outlet pipe, an arc-shaped groove I and an arc-shaped groove II are further formed in the inner wall of the shell, the arc-shaped groove I is communicated with the liquid inlet pipe, and the arc-shaped groove II is communicated with the liquid outlet pipe.

Further, the outside of casing is equipped with the ring body, be equipped with annular logical groove in the ring body, annular channel and the middle part intercommunication of a plurality of through-hole, be connected with the valve body on the ring body.

Further, coupling assembling is all installed to in feed liquor pipe and the drain pipe, all be equipped with the deep hole with the casing intercommunication in feed liquor pipe and the drain pipe, the port of feed liquor pipe and the port of drain pipe all are equipped with interior edge body, coupling assembling includes shaft-like spare, spring and spacing ring, the main part of shaft-like spare is the stock, shaft-like spare outside middle part is equipped with the ring seat, the external diameter of ring seat is the same with the internal diameter of deep hole, the external diameter of stock is the same with the internal diameter of interior edge body, the stock one end of the stock of installing stretches out interior edge body, the spacing ring is installed to the inboard tip internal fit of deep hole, the internal diameter of spacing ring is the same with the external diameter of stock, the stock other end of shaft-like spare passes spacing ring and the inside intercommunication of casing, the spring has been cup jointed on the stock, the spring is located between ring seat and the interior edge body.

Further, an annular groove is formed in one side, close to the axis of the shell, of the ring seat, a gap is formed between the annular groove and the limiting ring, the gap is communicated with the annular through groove of the ring body through the formed communication hole, the ring seat is moved outwards, and air in the through hole enters the gap through the annular through groove.

Further, an impeller is mounted on the extended end of the shaft body.

Further, the outside of impeller is equipped with the ring, the inside and outside both sides of ring all are formed with annular notch, the outside edge of ring is equipped with the inclined plane, and the inclined plane is close to impeller one side.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the vane pump is fixedly arranged on the hydraulic equipment through the support, and meanwhile, the height of the vane pump shaft body is changed through the support, so that the transmission connection between the shaft body and the engine output shaft is conveniently realized, and in addition, the substrate is provided with a plurality of limiting grooves, so that the behavior installation between the vane pump and the vertical plate is conveniently realized.

2. According to the invention, in the process of meshing and mounting through the interface of the external pipeline, the mounted rod-shaped part is pulled to extend outwards, the compression of the spring is completed, meanwhile, the gap formed between the limiting ring and the ring seat is increased, and air in the through hole enters the gap through the annular through groove under the action of negative pressure, so that the negative pressure is formed in the through hole, the meshing teeth are conveniently stuck tightly, and loosening is avoided.

3. According to the invention, the air pressure in the through hole is reduced, so that the mounted bolt is subjected to the thrust of external air pressure, the pressure between the meshing teeth is increased, the reliability of bolt mounting is improved, and the problem that oil leakage occurs at the end cover by pushing the fixed end cover to loosen with the bolt along with the increase of the internal pressure of the shell in the working process of the vane pump is effectively solved.

4. The invention opens the valve body and the outside air; the communication is decompressed, so that the internal pressure of the through hole is identical to the external atmospheric pressure, and the mounting bolt is convenient to detach in the maintenance process.

Drawings

FIG. 1 is a schematic view of the overall assembly structure of the present invention;

FIG. 2 is a schematic view of the overall structure of a vane pump according to the present invention;

FIG. 3 is a schematic view of an exploded construction of a vane pump according to the present invention;

FIG. 4 is a schematic view of a vane pump mount structure according to the present invention;

FIG. 5 is a schematic diagram of a sectional structure of a liquid inlet pipe of a vane pump according to the present invention;

FIG. 6 is a schematic view of a vane pump connection set deployment member of the present invention;

FIG. 7 is a schematic cross-sectional view of a vane pump ring body according to the present invention;

FIG. 8 is a schematic view of an impeller mounting structure of the present invention;

FIG. 9 is a schematic view of a stand structure of the present invention;

fig. 10 is a schematic cross-sectional view of a base housing assembly according to the present invention.

In the figure: 1. a support; 101. a substrate; 102. a vertical plate; 103. a bump; 2. a housing; 201. a liquid inlet pipe; 202. a ring body; 203. a through hole; 204. an arc-shaped groove I; 205. an arc-shaped groove II; 206. a liquid outlet pipe; 207. a convex ring; 208. a shaft hole; 209. a groove; 3. an end cap; 4. a bolt; 5. a rotating wheel; 6. a blade; 7. a shaft body; 8. a rod-like member; 801. a ring seat; 9. a spring; 10. a limiting ring; 11. a valve body; 12. an impeller; 1201. a circular ring; 1202. and (5) an inclined plane.

Detailed Description

The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Referring to fig. 1 to 10, the present invention is a vane pump with a leakage preventing function for a hydraulic device, comprising a support 1, wherein the support 1 is used for fixing and installing;

the support 1 comprises a base plate 101 and a vertical plate 102, wherein the vertical plate 102 is vertically arranged on one side of the base plate 101, a plurality of protruding blocks 103 are arranged on the mounting surface of the vertical plate 102, a positioning hole is formed in the middle of the vertical plate 102, a plurality of limiting grooves are formed in the base plate 101, and the base plate 101 is fixedly arranged in the limiting grooves by screws;

the vane pump is fixedly installed on the hydraulic equipment through the support 1, the height of the vane pump shaft body 7 is changed through the support 1, transmission connection between the shaft body 7 and an engine output shaft is conveniently achieved, a plurality of limiting grooves are formed in the base plate 101, and behavior installation between the vane pump and the vertical plate 102 is conveniently achieved.

The base shell assembly comprises a shell 2 and an end cover 3, wherein the shell 2 is provided with a cylindrical cavity, an opening of the cavity is sealed through the end cover 3 and is fixed through a bolt 4 penetrating through the end cover 3, and the shell 2 is fixed on the support 1 through the bolt 4;

the end face pipe of the shell 2 is penetrated with a plurality of through holes 203, and fixing bolts 4 are arranged at two ends of the through holes 203 to seal the end parts of the through holes 203;

the blade assembly comprises a rotating wheel 5, blades 6 and a shaft body 7, the shaft body 7 which is coaxially distributed is arranged in the shell 2, the rotating wheel 5 is eccentrically arranged on the shaft body 7, and a plurality of telescopic blades 6 are arranged on the rotating wheel 5.

The base shell component is made of metal materials by pouring, inner screw holes are formed in two ends of the through hole 203, the bolts 4 are matched with the inner screw threads to realize sealing fit, and a closed cavity is formed in the two ends of the through hole 203 after the two ends of the through hole 203 are sealed by the bolts 4;

in the working process, the shaft body 7 drives the rotating wheel 5 to synchronously rotate, the blades 6 which are slidably arranged on the rotating wheel 5 move outwards under the action of centrifugal force, so that the outer side end parts of the blades 6 are tightly attached to the inner wall of the shell 2, two adjacent blades 6 and the inner wall of the shell 2 form a cavity, and along with the rotation of the rotating wheel 5, the volume of the cavity is changed from small to large to small and circulated.

The shell 2 is of a cylindrical structure, a deep hole is formed in one end face of the shell 2, the formed deep hole forms a cavity, a convex ring 207 and grooves 209 are formed in the other end face of the shell 2, a plurality of grooves 209 are formed in the grooves 209, the grooves 209 are distributed annularly around the convex ring 207, the grooves 209 correspond to the convex blocks 103 one by one, the shell 2 is mounted on the vertical plate 102, the convex ring 207 is mounted in cooperation with the positioning holes, and the grooves 209 are mounted in cooperation with the corresponding convex blocks 103;

through the corresponding cooperation of recess 209, realize the location installation, the bolt 4 of being convenient for install on riser 102 aligns with through-hole 203.

The shell 2 is communicated with a liquid inlet pipe 201 and a liquid outlet pipe 206, the liquid inlet pipe 201 and the liquid outlet pipe 206 are distributed symmetrically along the center of the axis of the shell 2, meanwhile, the axis of the liquid inlet pipe 201 and the axis of the liquid outlet pipe 206 are mutually parallel, the inner wall of the shell 2 is also provided with an arc-shaped groove I204 and an arc-shaped groove II 205, the arc-shaped groove I204 is communicated with the liquid inlet pipe 201, and the arc-shaped groove II 205 is communicated with the liquid outlet pipe 206;

in the process that the volume of a cavity formed by two adjacent blades 6 and the inner wall of the shell 2 is changed from small to large, the cavity is communicated with the arc-shaped groove I204 and the liquid inlet pipe 201, and oil enters the cavity under the action of negative pressure;

in the process that the volume of a cavity formed by two adjacent blades 6 and the inner wall of the shell 2 is changed from large to small, the cavity is communicated with the arc-shaped groove II 205 and the liquid outlet pipe 206, and oil in the cavity enters the liquid outlet pipe 206 to be discharged, so that the oil is pushed to move to one side;

the arc-shaped groove I204 and the arc-shaped groove II 205 which are additionally arranged are symmetrically distributed along the center of the axis of the shell 2, so that the arc-shaped groove I and the arc-shaped groove II are simultaneously communicated with a plurality of cavities at two sides, and rapid liquid inlet or liquid discharge is conveniently realized.

The outside of casing 2 is equipped with ring body 202, is equipped with annular logical groove in the ring body 202, and the annular channel communicates with the middle part of a plurality of through-holes 203, is connected with valve body 11 on the ring body 202.

The connecting assembly is installed in each of the liquid inlet pipe 201 and the liquid outlet pipe 206, deep holes communicated with the shell 2 are formed in each of the liquid inlet pipe 201 and the liquid outlet pipe 206, inner edge bodies are arranged at each of the ports of the liquid inlet pipe 201 and the liquid outlet pipe 206, each connecting assembly comprises a rod-shaped piece 8, a spring 9 and a limiting ring 10, a long rod is arranged on the main body of each rod-shaped piece 8, a ring seat 801 is arranged in the middle of the outer side of each rod-shaped piece 8, the outer diameter of each ring seat 801 is identical to the inner diameter of the corresponding deep hole, one end of each long rod of each rod-shaped piece 8 extends out of the corresponding inner edge body, the limiting ring 10 is installed at the inner end of each deep hole in an inner side, the inner diameter of each limiting ring 10 is identical to the outer diameter of each long rod, the other end of each long rod of each rod-shaped piece 8 penetrates through the limiting ring 10 and the shell 2, a spring 9 is sleeved on each long rod, and each spring 9 is located between each ring seat 801 and the inner edge bodies.

The end part of the rod-shaped piece 8 extending out of the liquid inlet pipe 201 or the liquid outlet pipe 206 is provided with external threads, when the liquid inlet pipe 201 or the liquid outlet pipe 206 is communicated with an external pipeline, the rod-shaped piece 8 is installed on the external threads through the matching of an interface of the external pipeline, so that the communication is realized, in the process of meshing installation, the installed rod-shaped piece 8 is pulled to extend outwards, the spring 9 is compressed, meanwhile, a gap formed between the limiting ring 10 and the ring seat 801 is increased, air in the through hole 203 enters the gap through the annular through groove under the action of negative pressure, and thus the negative pressure is formed in the through hole 203, meanwhile, the volume in the annular through groove is negligible, and the pressure change in the gap is not influenced;

through reducing the inside atmospheric pressure of through-hole 203 to realize that the bolt 4 of installation receives the thrust of outside atmospheric pressure, thereby increase the pressure between the meshing tooth, improve the firm nature of bolt 4 installation, the effectual in-process of solving is at the vane pump work, along with the inside pressure increase of casing 2, promotes fixed end cover 3 with bolt 4 not hard up, realizes that the problem that fluid leakage appears in end cover 3 department.

A ring groove is formed in one side, close to the axis of the shell 2, of the ring seat 801, a gap is formed between the ring groove and the limiting ring 10, the gap is communicated with the annular through groove of the ring body 202 through the formed communication hole, and the ring seat 801 is moved outwards, so that air in the through hole 203 enters the gap through the annular through groove;

the ring body 202 is connected with the valve body 11, and the air in the through hole 203 can be pumped out through the valve body 11, so that the pressure in the through hole 203 is further reduced, the installation compactness of the bolt 4 is improved, and in addition, the valve body 11 and the outside air are opened; the communication is depressurized, so that the internal pressure of the through hole 203 is guaranteed to be the same as the external atmospheric pressure, and the mounting bolt 4 is convenient to detach in the maintenance process.

An impeller 12 is mounted on the protruding end of the shaft body 7.

The outer side of the impeller 12 is provided with a circular ring 1201, annular notches are formed on the inner side and the outer side of the circular ring 1201, an inclined surface 1202 is arranged on the outer side edge of the circular ring 1201, and the inclined surface 1202 is close to one side of the impeller 12;

in the process that the impeller 12 follows the shaft body 7 to rotate, the impeller 12 pushes air to one side cloud to be multifunctional, air inlet is realized through the inner annular notch, air exhaust is realized through the outer annular notch, and air fluidity of the joint of the impeller 12 and the shaft hole 208 is improved, so that the heat dissipation effect of the shaft hole 208 is improved.

It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. A vane pump having a leakage preventing function for a hydraulic device, comprising:

the support (1), the said support (1) is used for fixed installation;

the base shell assembly comprises a shell (2) and an end cover (3), wherein the shell (2) is provided with a cylindrical cavity, an opening of the cavity is sealed through the end cover (3) and is fixed through a bolt (4) penetrating through the end cover (3), and the shell (2) is fixed on the support (1) through the bolt (4);

the end face pipe of the shell (2) is penetrated with a plurality of through holes (203), and fixing bolts (4) are arranged at two ends of the through holes (203) to seal the end parts of the through holes (203);

the blade assembly comprises a rotating wheel (5), blades (6) and a shaft body (7), wherein the shaft body (7) which is coaxially distributed is arranged in the shell (2), the rotating wheel (5) is eccentrically arranged on the shaft body (7), and a plurality of telescopic blades (6) are arranged on the rotating wheel (5).

2. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 1, characterized in that: the support (1) comprises a base plate (101) and a vertical plate (102), wherein the vertical plate (102) is vertically arranged on one side of the base plate (101);

a plurality of protruding blocks (103) are arranged on the mounting surface of the vertical plate (102), and a positioning hole is formed in the middle of the vertical plate (102);

a plurality of limiting grooves are formed in the base plate (101), and the base plate (101) is fixedly arranged in the limiting grooves through screws.

3. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 2, characterized in that: the shell (2) is of a cylindrical structure, a deep hole is formed in one end face of the shell (2), and the formed deep hole forms a cavity;

the other end face of the shell (2) is provided with a convex ring (207) and a plurality of grooves (209), the grooves (209) are annularly distributed around the convex ring (207), and the grooves (209) are in one-to-one correspondence with the convex blocks (103);

the shell (2) is arranged on the vertical plate (102), the convex ring (207) is matched with the positioning hole, and the groove (209) is matched with the corresponding convex block (103).

4. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 1, characterized in that: the shell (2) is communicated with a liquid inlet pipe (201) and a liquid outlet pipe (206), the liquid inlet pipe (201) and the liquid outlet pipe (206) are symmetrically distributed along the center of the axis of the shell (2), and meanwhile, the axis of the liquid inlet pipe (201) is parallel to the axis of the liquid outlet pipe (206);

the inner wall of the shell (2) is also provided with a first arc-shaped groove (204) and a second arc-shaped groove (205), the first arc-shaped groove (204) is communicated with the liquid inlet pipe (201), and the second arc-shaped groove (205) is communicated with the liquid outlet pipe (206).

5. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 1, characterized in that: the outer side of the shell (2) is provided with a ring body (202), an annular through groove is arranged in the ring body (202), and the annular channel is communicated with the middle parts of a plurality of through holes (203);

the ring body (202) is connected with a valve body (11).

6. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 5, characterized in that: connecting components are arranged in the liquid inlet pipe (201) and the liquid outlet pipe (206);

deep holes communicated with the shell (2) are formed in the liquid inlet pipe (201) and the liquid outlet pipe (206), and inner edge bodies are arranged at the port of the liquid inlet pipe (201) and the port of the liquid outlet pipe (206);

the connecting assembly comprises a rod-shaped piece (8), a spring (9) and a limiting ring (10), wherein the main body of the rod-shaped piece (8) is a long rod, a ring seat (801) is arranged in the middle of the outer side of the rod-shaped piece (8), the outer diameter of the ring seat (801) is the same as the inner diameter of a deep hole, the outer diameter of the long rod is the same as the inner diameter of an inner edge body, and one end of the long rod of the installed rod-shaped piece (8) extends out of the inner edge body;

a limiting ring (10) is mounted in the inner end part of the deep hole in a matched mode, the inner diameter of the limiting ring (10) is the same as the outer diameter of the long rod, and the other end of the long rod of the rod-shaped piece (8) penetrates through the limiting ring (10) to be communicated with the inside of the shell (2);

the long rod is sleeved with a spring (9), and the spring (9) is positioned between the ring seat (801) and the inner edge body.

7. The vane pump with a leakage preventing function for a hydraulic apparatus according to claim 6, wherein: a ring groove is formed in one side, close to the axis of the shell (2), of the ring seat (801), a gap is formed between the ring groove and the limiting ring (10), and the gap is communicated with an annular through groove of the ring body (202) through a formed communication hole;

the ring seat (801) is moved outwards so that air inside the through hole (203) enters the gap through the annular through groove.

8. A vane pump with a leakage preventing function for a hydraulic apparatus according to claim 1, characterized in that: an impeller (12) is arranged at the extending end of the shaft body (7).

9. The vane pump with a leakage preventing function for a hydraulic apparatus according to claim 8, wherein: the outer side of impeller (12) is equipped with ring (1201), the inside and outside both sides of ring (1201) all are formed with annular notch, the outside edge of ring (1201) is equipped with inclined plane (1202), and inclined plane (1202) are close to impeller (12) one side.